GeForce GTX 580 3GB vs Radeon HD 5750 1GB

Intro

Compare those specifications to the Radeon HD 5750 1GB, which features a GPU core clock speed of 700 MHz, and 1024 MB of GDDR5 memory set to run at 1150 MHz through a 128-bit bus. It also is made up of 720(144x5) SPUs, 36 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 158 Watts (184%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 3GB should theoretically be a lot superior to the Radeon HD 5750 1GB in general. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 118784 (161%)

Texel Rate

The GeForce GTX 580 3GB should be quite a bit (approximately 96%) faster with regards to texture filtering than the Radeon HD 5750 1GB. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 24208 (96%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 580 3GB is superior to the Radeon HD 5750 1GB, by far. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 25856 (231%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.